Datasheet MAX6369, MAX6370, MAX6371, MAX6372, MAX6373, MAX6374 (Maxim) - 2

Pin-Selectable Watchdog Timers ABSOLUTE MAXIMUM RATINGS
Terminal Voltage (with respect to GND) Continuous Power Dissipation (TA = +70°C) VCC ...-0.3V to +6V SOT23-8 (derate 8.75mW/°C above +70°C)...700mW WDI...-0.3V to +6V Operating Temperature Range ...-40°C to +85°C WDO (Open Drain: MAX6369/71/73) ...-0.3V to +6V Storage Temperature Range ...-65°C to +150°C WDO (Push-Pull: MAX6370/72/74 ...-0.3V to (VCC + 0.3V) Junction Temperature ..+150°C SET0, SET1, SET2 ..-0.3V to (VCC + 0.3V) Lead Temperature (soldering, 10s) ...+300°C Maximum Current, Any Pin (input/output)...20mA VCC Rise or Fall Rate..0.05V/µs Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +2.5V to +5.5V, SET_ = VCC or GND, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C and VCC = +3V.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX6369–MAX6374
Operating Voltage Range VCC 2.5 5.5 V Supply Current ICC No load 8 20 µA Input High Voltage VIH WDI, SET0, SET1, SET2 0.8 × VCC V WDI, SET0, SET1, VCC ≥ 3.3V 0.8 Input Low Voltage VIL V SET2 VCC ≥ 2.5V 0.6 Logic Input Current (Note 2) WDI or SET_ = 0 or VCC 0 ±10 nA ISINK = 1.2mA, VCC > 2.7V, watchdog 0.3 V output asserted WDO Output Low VOL Voltage ISINK = 6mA, VCC > 4.5V, watchdog 0.4 V output asserted WDO V NDO = 0 to +5.5V, output deasserted, Leakage Current ILKG 1 µA MAX6369/MAX6371/MAX6373 ISOURCE = 500µA, VCC > 2.7V, watchdog 0.8 × VCC output deasserted WDO Output High V V Voltage OH ISOURCE = 800µA, VCC > 4.5V, watchdog VCC - 1.5 output deasserted
MAX6369/MAX6370
SET2 = 0, SET1 = 0, SET0 = 0 1 3 SET2 = 0, SET1 = 0, SET0 = VCC 10 30 ms SET2 = 0, SET1 = VCC, SET0 = 0 30 90 SET2 = 0, SET1 = VCC, SET0 = VCC Watchdog Disabled Startup Delay Period tDELAY SET2 = VCC, SET1 = 0, SET0 = 0 100 300 ms SET2 = VCC, SET1 = 0, SET0 = VCC 1 3 SET2 = VCC, SET1 = VCC, SET0 = 0 10 30 s SET2 = VCC, SET1 = VCC, SET0 = VCC 60 180
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